Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended			12 Months Ended
	Dec. 31, 2012 GBP (£) Y	Dec. 31, 2011 USD ($) Y	Dec. 31, 2012 USD ($)	Dec. 31, 2013 Subsequent Event GBP (£)	Dec. 31, 2013 Maximum Subsequent Event GBP (£)
Significant Accounting Policies [Line Items]
Date of Incorporation	Jan. 11, 1991
Number of customer accounted for approximately 10% or more of total revenues	2	0
Aggregate percentage of revenue the from customers accounted for more then 10%	28.00%
Temporary investments maturities	90 days
Deferred tax asset		$ 3,086,000	$ 3,888,000
Operating loss carryforwards, limitations on use	Company's NOLs are subject to annual limitations of $1,300,000
Options and warrants excluded from the calculation of diluted shares	0	1,995,000
Concentration risk, product, description	The reductions set forth in the proposed rule range from 11 to 47 percent from the levels established in the prior rule, for calendar years 2012, 2013, and 2014
Production and importation permission from government agency, amount	£ 55,000,000			£ 39,000,000	£ 45,000,000